Rib for a hammock



FIG. 1 is a front perspective view of a rib for a hammock showing my new design;

FIG. 2 is a front elevational view thereof, the back being a mirror image;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a side elevational view of one end thereof; and,

FIG. 6 is another side elevational view of the other end thereof. 

The ornamental design for a rib for a hammock, as shown and described. 